| /* m68kelf support, derived from m68kv4.h */ |
| |
| /* Target definitions for GNU compiler for mc680x0 running System V.4 |
| Copyright (C) 1991-2022 Free Software Foundation, Inc. |
| |
| Written by Ron Guilmette (rfg@netcom.com) and Fred Fish (fnf@cygnus.com). |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| GCC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| |
| #ifndef SWBEG_ASM_OP |
| #define SWBEG_ASM_OP "\t.swbeg\t" |
| #endif |
| |
| /* Here are three prefixes that are used by asm_fprintf to |
| facilitate customization for alternate assembler syntaxes. |
| Machines with no likelihood of an alternate syntax need not |
| define these and need not use asm_fprintf. */ |
| |
| /* The prefix for register names. Note that REGISTER_NAMES |
| is supposed to include this prefix. Also note that this is NOT an |
| fprintf format string, it is a literal string */ |
| |
| #undef REGISTER_PREFIX |
| #define REGISTER_PREFIX "%" |
| |
| /* The prefix for local (compiler generated) labels. |
| These labels will not appear in the symbol table. */ |
| |
| #undef LOCAL_LABEL_PREFIX |
| #define LOCAL_LABEL_PREFIX "." |
| |
| /* The prefix to add to user-visible assembler symbols. */ |
| |
| #undef USER_LABEL_PREFIX |
| #define USER_LABEL_PREFIX "" |
| |
| /* config/m68k.md has an explicit reference to the program counter, |
| prefix this by the register prefix. */ |
| |
| #define ASM_RETURN_CASE_JUMP \ |
| do { \ |
| if (TARGET_COLDFIRE) \ |
| { \ |
| if (ADDRESS_REG_P (operands[0])) \ |
| return "jmp %%pc@(2,%0:l)"; \ |
| else if (TARGET_LONG_JUMP_TABLE_OFFSETS) \ |
| return "jmp %%pc@(2,%0:l)"; \ |
| else \ |
| return "ext%.l %0\n\tjmp %%pc@(2,%0:l)"; \ |
| } \ |
| else if (TARGET_LONG_JUMP_TABLE_OFFSETS) \ |
| return "jmp %%pc@(2,%0:l)"; \ |
| else \ |
| return "jmp %%pc@(2,%0:w)"; \ |
| } while (0) |
| |
| /* This is how to output an assembler line that says to advance the |
| location counter to a multiple of 2**LOG bytes. */ |
| |
| #undef ASM_OUTPUT_ALIGN |
| #define ASM_OUTPUT_ALIGN(FILE,LOG) \ |
| do { \ |
| if ((LOG) > 0) \ |
| fprintf ((FILE), "%s%u\n", ALIGN_ASM_OP, 1 << (LOG)); \ |
| } while (0) |
| |
| /* Register in which address to store a structure value is passed to a |
| function. The default in m68k.h is a1. For m68k/SVR4 it is a0. */ |
| |
| #undef M68K_STRUCT_VALUE_REGNUM |
| #define M68K_STRUCT_VALUE_REGNUM A0_REG |
| |
| /* The static chain regnum defaults to a0, but we use that for |
| structure return, so have to use a1 for the static chain. */ |
| |
| #undef STATIC_CHAIN_REGNUM |
| #define STATIC_CHAIN_REGNUM A1_REG |
| #undef M68K_STATIC_CHAIN_REG_NAME |
| #define M68K_STATIC_CHAIN_REG_NAME REGISTER_PREFIX "a1" |
| |
| #define ASM_COMMENT_START "|" |
| |
| /* Define how the m68k registers should be numbered for Dwarf output. |
| The numbering provided here should be compatible with the native |
| SVR4 debugger in the m68k/SVR4 reference port, where d0-d7 |
| are 0-7, a0-a8 are 8-15, and fp0-fp7 are 16-23. */ |
| |
| #undef DEBUGGER_REGNO |
| #define DEBUGGER_REGNO(REGNO) (REGNO) |
| |
| #if 0 |
| /* SVR4 m68k assembler is bitching on the `comm i,1,1' which askes for |
| 1 byte alignment. Don't generate alignment for COMMON seems to be |
| safer until we the assembler is fixed. */ |
| #undef ASM_OUTPUT_ALIGNED_COMMON |
| /* Same problem with this one. */ |
| #undef ASM_OUTPUT_ALIGNED_LOCAL |
| #endif |
| |
| #undef ASM_OUTPUT_COMMON |
| #undef ASM_OUTPUT_LOCAL |
| #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ |
| ( fputs (".comm ", (FILE)), \ |
| assemble_name ((FILE), (NAME)), \ |
| fprintf ((FILE), ",%u\n", (int)(SIZE))) |
| |
| #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ |
| ( fputs (".lcomm ", (FILE)), \ |
| assemble_name ((FILE), (NAME)), \ |
| fprintf ((FILE), ",%u\n", (int)(SIZE))) |
| |
| /* Currently, JUMP_TABLES_IN_TEXT_SECTION must be defined in order to |
| keep switch tables in the text section. */ |
| |
| #define JUMP_TABLES_IN_TEXT_SECTION 1 |
| |
| /* In m68k svr4, using swbeg is the standard way to do switch |
| table. */ |
| #undef ASM_OUTPUT_BEFORE_CASE_LABEL |
| #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \ |
| fprintf ((FILE), "%s&%d\n", SWBEG_ASM_OP, XVECLEN (PATTERN (TABLE), 1)) |
| /* end of stuff from m68kv4.h */ |
| |
| #undef ENDFILE_SPEC |
| #define ENDFILE_SPEC "crtend.o%s" |
| |
| #undef STARTFILE_SPEC |
| #define STARTFILE_SPEC "crtbegin.o%s" |
| |
| #ifndef BSS_SECTION_ASM_OP |
| #define BSS_SECTION_ASM_OP "\t.section\t.bss" |
| #endif |
| |
| #ifndef ASM_OUTPUT_ALIGNED_BSS |
| #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ |
| asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) |
| #endif |